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Sealy Lennox Medium Mattress
Whether you're a night owl or an early riser, the Lennox Medium is designed to support you every step—or snooze—of the way. Part of Sealy’s premium Posturepedic collection, this mattress blends intelligent technology, luxurious comfort, and long-lasting durability to provide a sleep experience that truly performs. At the core is Sealy’s exclusive AlignSupport® spring system—a two-stage coil design that responds to your body’s shape and applies deep-down support exactly where needed. Built to last, each coil is twice-tempered for proven strength and resilience over time. Edge-to-edge comfort comes courtesy of Sealy’s innovative UniCased® structure, reinforcing every side of the mattress for more excellent stability and a larger usable sleep surface. No more rolling off the edge or feeling unsupported when sitting up. It’s all built on BasePlank, a rock-solid foundation that combines the entire sleep system. In the centre third of the mattress, the ComfortCore® zone provides targeted pressure relief to your hips and lower back—where your body needs it most. Add a layer of gel-infused foam for breathability and Sealy, firm foam layers to deliver that perfect “just right” medium feel—not too soft or firm. Visually striking and indulgently soft, the fabric cover features a touch of Cashmere for added luxury. SmarTex® fabric tech helps wick away moisture and regulate your body temperature, while ProShield® works to keep allergens at bay—officially endorsed by Allergy UK. Handcrafted in Britain and backed by a 7-year guarantee, the Lennox Medium Mattress is built to support your sleep, night after night.
Product details
- Single: H30cm x W90cm x D190cm
- Double: H30cm x D135cm x D190cm
- King: H30cm x D150cm x D200cm
- Super King: H30cm x D180cm x D200cm
- No turn mattress with a medium firmness
- Quilted top
- Comfort filling including a SmarTex fabric layer, a double layer of Sealy Firm Softness Foam and the Sealy Foam ComfortCore
- An AlignSupport Coil support system, UniCased and BasePlank for structure and stability
- 7 year guarantee
Product specifications
Product Sku -lennoxmediummattress
Product protection
For a single upfront fee, you can make sure that your new upholstery is safeguarded from common accidents in your home.
Delivery Information
Premium Delivery - £99
Applied to all medium and large furniture items
Includes unwrapping, assembling (except for flat-packed pieces and garden furniture), placing your furniture in the location specified by you, as well as removing and recycling the packaging.
Standard Delivery - £49
Our standard delivery service is for our medium-sized furniture & Garden products.
Please note any product using this delivery service will be delivered boxed and not assembled by our team including our garden furniture.
The estimated delivery lead time is displayed next to each furniture product. However, you will be contacted in advance of your delivery by a member of our delivery team so that you can select the next available date that is most convenient for you.
Courier Delivery - £6.95 or FREE over £60
Applied to all home store and smaller items
£6.95 per order and FREE when you spend £60 or over
Please note any product using this delivery service will be delivered boxed and may require some assembly by you.
The estimated delivery lead time is displayed next to each product.
Payment options
We've made it easy for you to pay the way that suits you best. At checkout, you'll automatically be offered the payment methods available to you depending on what you are buying.
Pay in full
If you'd like to pay in full, you'll have several payment methods available. You can use Google Pay, Apple Pay, or credit or debit cards.
Buy now, pay later with Klarna
Make your purchase today with Klarna and enjoy the flexibility of two payment options: pay in 30 days or pay in 3. Both options have no interest or fees—provided you pay on time.
Pay a deposit and apply for interest-free credit
You'll also have the option to pay a deposit and apply for interest-free credit when spending a minimum of £500. Our simple checkout process includes an easy-to-use, interest-free credit calculator. Here’s how it works:
1. Choose Your Deposit: Use the first slider to select your deposit amount, with a minimum of 20%. As you adjust the deposit, your monthly payment will update automatically.
2. Select Your Term: Use the second slider to choose your 0% finance term, up to 36 months. Your monthly payment will adjust accordingly.
Once you are satisfied with your deposit and term, you’ll know your exact monthly payment. Simply place your order, complete your application with our finance partner, and pay your deposit.
Explore the range
Discover the LENNOX MEDIUM range